Rack



FIG. 1 is a front view of a rack.

FIG. 2 is a top view of the rack of FIG. 1.

FIG. 3 is a side view of the rack of FIG. 1.

FIG. 4 is a front view of a second embodiment of a rack;

FIG. 5 is a top view of the rack of FIG. 4; and,

FIG. 6 is a side view of the rack of FIG. 4. 

The ornamental design for a rack, as shown and described. 